BACKGROUND AND OBJECTIVE The 577-nm (yellow) laser provides an alternative to the 532-nm (green) laser in retinal photocoagulation, with potential benefits in macular treatment and through ocular opacities. To assess relative risk of thermomechanical rupture of Bruch's membrane with yellow laser in photocoagulation, the therapeutic window, the ratio of threshold powers for mild coagulation and ...

PURPOSE To evaluate the effects of ultrasonography (US)-guided interstitial laser photocoagulation (ILP) on the volume of benign solitary solid cold thyroid nodules and any nodule-related symptoms. MATERIALS AND METHODS ILP was performed in 16 patients with normal thyroid function and a solid benign thyroid nodule. None of the patients had uptake on a radionuclide scan. Patients underwent one...

AIM To evaluate the long-term efficacy of interstitial laser photocoagulation (ILP) in solitary benign thyroid nodules. DESIGN AND METHODS A total of 78 euthyroid outpatients (45 participating in randomized trials) with a benign solitary solid and scintigraphically cold thyroid nodule causing local discomfort were assigned to ILP. ILP (using one laser fiber) was performed under continuous ult...

BACKGROUND We examined the efficiency and cost effectiveness of a temperature feedback diode-laser system in the treatment of benign prostatic hypertrophy (BPH). METHODS One hundred twenty patients with symptomatic BPH were included in this study between October 1997 and January 1998. Sixty of them were treated by transurethral resection of the prostate (TUR-P), and 60 patients were treated b...

BACKGROUND Facial telangiectasia due to photodamage is a common disfiguring condition in modern society. Over the past 10 years yellow light laser photocoagulation has become the treatment of choice. OBJECTIVE To compare the effectiveness of copper vapor laser alone with combined microsclerotherapy and copper vapor laser in the treatment of facial telangiectases. METHODS Two hundred thirty-...

PURPOSE To evaluate visual results and vitreoretinopathy and retinal detachment frequencies in patients with and without prophylactic pre-equatorial retinal photocoagulation, who underwent clear lens extraction (CLE) to correct myopia. METHODS Thirty-five patients (60 eyes) that underwent clear lens extraction at the "Fundação Altino Ventura" had median follow-up of 20.5 months. They were cla...

PURPOSE To determine the effect of atorvastatin, an HMG CoA reductase inhibitor, on experimental choroidal neovascularization (CNV) induced by laser photocoagulation in mice. METHODS CNV was induced by laser photocoagulation in normal wild-type mice. The mice received either oral atorvastatin 10 (AS10 group) or 20 (AS20 group) mg/kg per day 3 days before and after laser application; 1 (AS1) a...

BACKGROUND To evaluate the long-term outcomes of Argon laser photocoagulation compared to surgical direct cyclopexy in small-size cyclodialysis cleft patients. METHODS This is a retrospective study. Small-size cyclodialysis cleft patients who underwent Argon laser photocoagulation and surgical direct cyclopexy were reviewed. The mean follow-up period were 82.4 (range, 61 - 145) months and 99....

AIMS Sight-threatening diabetic retinopathy has been treated with photocoagulation for decades but the mechanisms behind the beneficial clinical effects are poorly understood. One target of irradiation and a potential player in this process is the retinal pigment epithelium (RPE). Here we establish an in vitro model for photocoagulation of human RPE cells. METHODS ARPE-19 cells were exposed t...